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Neuritic Plaque

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Updated July 23, 2008

Microscope Photo: Sandy Huffaker / Stringer / Getty Images
Definition:

Protein conglomerates which are found inside the brains of people who suffer from Alzheimer disease. The conglomerates are made of a protein called beta-amyloid, which accumulates outside of neurons and other brain cells, in a space known as the extracellular space.

Neuritic plaques can only be seen under the microscope.

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